/* Northern Mineral Resources - Responsive */

@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
    .footer-brand { grid-column: 1 / -1; }
    .values-grid { grid-template-columns: 1fr; }
    .two-col { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 968px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .project-cards-grid { grid-template-columns: 1fr; }
    .nav-toggle { display: flex; }
    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--white);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        border-bottom: 1px solid rgba(12, 42, 68, 0.08);
    }
    .main-nav.is-open { max-height: 80vh; overflow-y: auto; }
    .nav-list {
        flex-direction: column;
        padding: 20px;
        gap: 0;
    }
    .nav-list > li { width: 100%; border-bottom: 1px solid rgba(12, 42, 68, 0.08); }
    .nav-list > li > a { padding: 14px 0; }
    .nav-list .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        max-height: 0;
        overflow: hidden;
        padding: 0;
        background: var(--bg-light);
        box-shadow: none;
        border: none;
        border-radius: 0;
        transition: max-height 0.3s ease;
    }
    .nav-list li.dropdown-open .dropdown { max-height: 300px; padding: 8px 0 8px 16px; }
    .nav-list .dropdown a { padding: 10px 0; }
    .hero-ctas { flex-direction: column; }
    .hero-slider { min-height: 380px; height: 60vh; }
    .parallax-section { background-attachment: scroll; }
}

@media (max-width: 640px) {
    :root { --header-height: 64px; }
    .header-inner { padding: 0 16px; }
    .logo-img { height: 72px; }
    .hero-content { padding: 48px 16px 80px; }
    .hero-prev, .hero-next { width: 40px; height: 40px; font-size: 1.5rem; left: 12px; right: 12px; }
    .stats-grid { grid-template-columns: 1fr; gap: 28px; }
    .stats-section { padding: 48px 0; }
    .project-cards-section,
    .intro-section,
    .content-section { padding: 48px 0; }
    .container { padding: 0 16px; }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        padding-bottom: 32px;
    }
    .page-hero { min-height: 260px; padding: 40px 0; }
    .timeline-item { padding-left: 56px; }
    .timeline::before { left: 12px; }
    .timeline-item::before { left: 4px; width: 16px; height: 16px; }
    .services-track { padding-bottom: 24px; }
    .service-card { flex: 0 0 260px; }
    .btn { padding: 12px 24px; font-size: 0.85rem; }
}

@media (max-width: 480px) {
    .hero-slider { min-height: 340px; height: 55vh; }
    .gallery-grid { grid-template-columns: 1fr; }
}